Toggle trimming mechanism.



I... v I 0 APPLICATION FILED DEC.22, I917.

Patented Oct. 15, 1918,

G l ie MI m JESSE E. IVES, OF NORFOLK, VIRGINIA.

TOGG-LE TRIMMING MECHANISM.

Specification of Letters Patent.

Patented Oct. 15, 1918.

Application filed December 22, 1917. Serial No. 208,512.

To all whom it may concern:

Be it known that I, Jnssn E. Ivns, a citizen of the United States, and resident of S.Nor folk, in the county of Norfolk and State of Virginia, have invented certain new and useful Improvements in Toggle Trimming Mechanism of which the following is a specification.

This invention relates to toggle trimming mechanism for sewing machines and it is the dominant object of the invention to provide an improved method of securing the toggle trimming members to the stand or bracket whereby the same may be instantly removed therefrom for sharpening, thus, offecting a material saving of time and labor; it being readily understood, that due to the arrangement of the needle bar and the presser foot bar with relation to the toggle trimming members, removal of the trimming members is rendered quite difficult, requiring considerable time, and as a consequence, incurring material waste, especially in factories and the like employing a great number of sewing machines.

Among other aims and objects of the invention may be recited, the provision of a device of the character mentioned with a view to compactness, and in which the number of parts are few, the construction simple, the cost of production small, and efliciency and operation hig The foregoing together with additional advantageous details and arrangements of arts of the preferred embodiment of my lnvention will be clear from the specific descrlption hereinafter contained, when read in connection with the accompanying draw part thereof, and wherein said embodiment of the invention is illustrated for the purpose of facilitating a full understanding of the present improvements.

In the drawings: 7

Figure 1 is a side elevation of the toggle trimming mechanism of a sewing machine, the toggle trimming members being secured in place by my invention;

Fig.

ings forming 2 1s a vertical transverse section through the mechanism; and

Fig. 3 is a detail in perspective of the lower toggle member.

Similar characters of reference will refer to similar parts throughout the several views f the drawings.

Having more particular reference to the drawings, 1 representsthe toggle mechanism stand or bracket in its entiret the said stand being provided with. a foot 2 whereby it may be secured in place upon a sewing machine. An apertured bearing lug 3 is formed integral with one side of-the lower portion of the stand 1 and is arranged in spaced apart relation from the adjacent portion thereof, the purposeof which will be subsequently described; Tothis apertured lug 3, there is secured a wrench element 4. through the medium of a set screw 5, which set screw passes through a slot formed in the said wrench element indicated by the numeral 6.

An opening is formed in the upper portion of the stand 1 and removably receives therein the bearing lug formed upon an upper toggle member 7 itof course being understood that the said upper toggle member is provided with a trimming element or knife and carries thereon, adjacent the trimmingelement, a finger'8.

A lower toggle element 9 is provided and has 'a slot 10 formed in one end thereof, the said slotted end being arranged between the bearing lug 3 and stand; and engaged with the shank portion of a bolt 11 passing through the aperture formed in the bearing lug 3 and a corresponding aperture formed in the stand 1. The hexagonal head of one end of the bolt 11 is received by the wrench element 4:, while the remaining hexagonal head arranged on the other end of the bolt is extended slightly beyond the stand 1 in order that the same may be engaged by a suitable implement, such as a wrench or the like. The lower toggle member 9 is provided with a recess 12 which is adapted to receive the finger 8 formed upon the upper toggle element 7, it of course being understood that the said lower toggle member is also provided with a trimming member or a knife. An opening is formed in the rear end of the lower toggle member and serves as means for receiving one end of an operating bar or link therein, the said opening being designated by the numeral 13.

Pivotally mounted adjacent the upper portion of the stand 1 is a spring arm or latch 14 the movement of which is limited by stop pins 15 arranged on said stand. Obviously, by swinging the latch member 14: downwardly-the same will engage over the upper toggle member 7 thus, maintaining the said toggle member in engagement with the opening formed in the stand 1 and insuring positive connection between the finger 8 and the recess formed in the lower toggle member 9. Due to theengagement of the upper toggle member with the lower toggle member, it will be also understood" that displacement of the lower toggle memher will beprevented.

When it is desired to, remove either of the toggle members, the pivotal latch 1a is swung to its uppermost position, whereupon the upper. toggle member 7. maybe readily removed. With the upper toggle member removed, the lower toggle member may be vthen slid upwardly out of engagement with the bolt 11, such disengagement being facilitated by slightly loosening the said bolt.

l Vith; the improved method of securing the toggle members to their. respective stand, it will be, appreciated by Workers skilled in the art that a; material saving of time and labor, iS-NetFected In thisv connection --how-. ever,- I also, desiregto have it understood, that any form of quick detachable securing means may be substituted in lieu of the pivotal latch, ltsuch as conditions or preference may dictate,

Manifestly, the construction ShOWI1,-,' lS capable. of considerable, modification and such modification as is within the scope of Copies of this patentmay .be obtained for five cents each, by

my claims, I consider within the spirit of my invention.

I claim 1. In a toggle trimming mechanism, the combination with a stand, of upper and lower toggle members removably engaged with the stand, and a pivotal latchmember engageable over the upper toggle member.

2. In a toggle trimming mechanism, the combination with a stand, of upper and lower toggle members removably engaged with the stand, said lower toggle member having that end of the same as engaged with the stand provided with an open ended slot, ,and quick detachable means arranged on thestandand engaged over said upper toggle member.

3. In a toggle trimming. mechanism, the combination with ,a gle. member removably engaged with the stand alower toggle member having one end slotted and-removably engaged with the stand, and a pivotal latch mounted on the stand and engageable over said upper toggle member. Y

In testimony whereof, I aflix my signature hereto.

JESSE 7E. IVES addressing the Commissioner of Patents,

1 Washington, D. G.

stand, of an upper tog-v 

